IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ] Printer-friendly version

OTN Frobisher Bay, Canada - Tag Release Metadata
Citation
Version 1 In OBIS Canada Digital Collections. Bedford Institute of Oceanography, Dartmouth, NS, Canada. Published by OBIS, Digital http://www.iobis.org/. Accessed on -INSERT DATE
Contact: Ocean Tracking Network (OTN), more

Access data
Archived data
Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution 4.0 International License.

Description
This study described the marine migration distribution, movements, diet, mortality and duration of anadromous Arctic char relative to migration temporal phase and environmental conditions (salinity, temperature and prey availability, tides) in inner Frobisher Bay (63o N 68o W), a macrotidal estuary on southeastern Baffin Island, Nunavut, Canada. Of the 33 char acoustically tracked in 2009, 15 (45%) ventured beyond 10 km of either of the Armshow or Sylvia Grinnell river mouths and 9 (27%) were detected in both rivers’ estuaries. Marine mortality was estimated at 24.2% with 62.5% of the mortalities occurring within the Sylvia Grinnell River estuary. more

Assuming an emigration date of June 18th in both 2008 and 2009, marine migration duration was 46 to 78 days. Mean durations were 59±6 in 2008, 65±7 in 2009 and 63±7 days combined. Tracking revealed migrant movements into the intertidal zone with the flood and ebb of the tide. Most detections were in surface waters (0 to 3 m). Inter/sub-tidal movements and consecutive repetitive dives (maximum 52.8 m) resulted in extreme body temperature shifts (-0.2 to18.1oC). Approximately half of intertidal and subtidal detections were between 9 to13oC, and 1 to 3oC, respectively. Stomach contents and deep diving suggested feeding in both inter/sub-tidal zones. We suggest that char tolerate cold water at depth to capture prey in the subtidal zone, then seek warmer water to enhance feeding/digestion physiology.

Scope
Themes:
Biology > Fish
Keywords:
Marine, ANW, Canada, Northwest Terr., Baffin I., Frobisher, Salvelinus alpinus (Linneaus, 1758)

Geographical coverage
ANW, Canada, Northwest Terr., Baffin I., Frobisher [Marine Regions]

Temporal coverage
21 July 2008 - 7 July 2009

Taxonomic coverage
Salvelinus alpinus (Linnaeus, 1758) [WoRMS]

Parameter
Occurrence of biota

Contributors
Acadia University, moredata creator Dalhousie University; Ocean Tracking Network (OTN), more

Related datasets
Published in:
OBIS-Canada: Canadian Ocean Biogeographic Information System, more

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2015-08-06
Information last updated: 2015-08-06
All data in IMIS is subject to the VLIZ privacy policy